Thread: Narrowband Filters - 12nm or 6nm
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Old 26-05-2015, 10:38 PM
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pluto (Hugh)
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A couple of comparisons I made when going from 7nm to 3nm Ha and 8.5nm to 3nm OIII:
http://www.iceinspace.com.au/forum/s...d.php?t=126305
http://www.iceinspace.com.au/forum/s...d.php?t=125922
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